<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<style type="text/css">
		.box{
			width: 200px;
			height: 200px;
			background: red url() 0 0 no-repeat;
		}
	</style>
	<!-- <script type="text/javascript" src="./jquery.min.js"></script> -->

	<script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.min.js"></script>
	<script type="text/javascript">
		$(function () {
			

			$('.box').find('.son').siblings('.xbs').css('background', 'blue');


			$('p').hover(function() {
				$(this).css('background', 'blue')
			}, function() {
				$(this).css('background', 'green')


			});

			// $('p').css('width', '900px');

			// $('p').css({
			// 	width: '800px',
			// 	height: '200px',
			// 	background:'red',
			// });


			$('p').attr('xbs');

			// $('p').attr('xbs','34567');


			$('p').html("<a>百度</a>");










		})
	</script>
</head>
<body>
	<div class="box" xbs="999">
		<p>学并思</p>
		<p class="xbs">学并思</p>
		<p class="son">学并思son</p>
		<p>学并思</p>
		<p>学并思</p>
		<p>学并思</p>
	</div>
	<p>学并思</p>
</body>
</html>